PEAL TIME COMPUTING METHOD AND DEVICE FOR MEASUREMENT OF ELECTROCONDUCTIVITY WITHOUT ANALOG TO DIGITAL CONVERTER

摘要

The design and development of measurement devices during the last decade has become important connected with the modem microprocessor electronics. The proposed study diels with design of method and device for measuring electrical quantities, which is consistent with these tendencies. An apparatus measuring the real-time electrical resistance of an electro-conducting medium, without using an analog-digital convener is proposed, which is based on a single-chip microcomputer. The method used allows collecting conductivity data in a real time by use of a dc voltage. An original measurement algorithm is proposed, which converts the electrical resistance of a random medium into time of discharging a capacitor with a known capacity.